In reply to Ksharp.

I can see the start-end technique is quite useful, but I still feel the original blog post is an indispensable step in illustrating the straightforward usage of where-clause in use and read statements within SAS/IML. After the basic techniques introduced in Rick's post, the start-end technique comes in really handy. Both methods are great but come into play at different stages of learning. I can learn, and do enjoy, from both techniques.